Attachment for an internal combustion engine



Nov. 22, 1932. C, COSTELLO 1,888,758

ATTACHMENT FOR AN INTERNAL COMBUSTION ENGINE Filed Dec. 6, 1930 Patented Nov. 22, 1932 UNITED STATES PATENT ori-Ica CHARLES il'. COSTELLO, OF CHICAGO, ILLINOIS, .ASSIGNOR 'ro enoaenn. Marsan, oF

CHICAGO, ILLINOIS application nl'ea December s, 1989. serial No. 500,624.

This invention relates to improvements in attachments for an internal combustion engine and, more especially, an air pump adapted for use in connection with a multi-cylinder internal combustion envine. My attachment is primarily adapted for use in connection with motor vehicles for tire inflation.

By the use of my invention, there is provided a very simple, cheaply manufactured, and easily operated device that may -be carried in a motor vehicle and used for inflating tires thereof. The operation is very sim# ple, requiring merely the removal of a spark plug from one of the cylinders of the engine andthe insertion therein of my improved pump. The engine is then operated with the remaining cylinders and the one having the device attached operates in conjunction therewith to pump air.

Other features and advantages of my invention will appear more fully as I proceed with my s ecilication.

In that orm of device embodying the features of my invention shown in the accompanying drawing- Figure 1 is a view in side elevation of the device in use; Fig. 2 is a view of the device in side elevation showing the same removed from the motor; Fig. 3 is a vertical sectional v view; and Fig. 4 is a view in side elevation of the valve ca e or retainerremoved, showing one of the ap valves in place.

As shown in the drawing, the device includes a cylindrical casing'lO having its lower end somewhat reduced in diameter and rovided with external threads 11 adapte to be screwed into the spark plug opening of one of the cylinders of a multi-cylinder internal combustion engine 12. 1

Numerals 13, 13 indicate air inlet holes in the casing 10. These openin are controlled by a check valve including t e loose flaps or strips of material 14, 14 inside of the casing. These strips, for example, may be made of rawhide of suicient length to ive a slight overlap to the 'ends 14, 14, as s own.

The valve flaps 14, 14 are held in position y by a cage or retainer, shown in Fig. 4, of cylindrical form, as indicated by 15, and preferably formed out of stamped or pressed sheet metal. This retainer is provided with four rows of outwardly projecting lugs 17 forming two annular channels accommodatlng the strips or fiaps 14. In Fi .4, the upper flap 14is shown in place and t e lower one is removed. As shown in'Fig. 3, the fia s 14 operate as check valves controlling t e air inlet openings 13. That is, these stri s are somewhat loosely held in place by t e cage or retainer 15 so'that they will permit air to enter the cas'n 10 through the holes 13; but will be force out against the holes to close the same with an increase of pressure inside of the casing. The holes 16 infthe retainer 15 under the aps 14 assist in giving a quick closing action.

The upper end of the casing 10 is closed by a cap 18 having a centrally arranged air loutlet 19 controlled by a ball check 20. The

upper end of the cap 18 is adapted to receive .the end of a flexible hose 21, as shown. the lower end of the casing The interior of 10 is provided with a shoulder 22 to displacement vof the retainer 15.

In the operation of the device, the casing 10 is screwed into a spark plug opening, as above described. When the motor is operated, the piston in the cylinder to which the device is attached operates to draw air in through the openings 13 and expel it through the opening 19 into the hose 21.

The cap 18 is preferably threaded into the upper end of the casing 10, as shown. When this cap vis removed, the valve mechanism for the inlet holes 13, that is, the retainer 15 and the flaps 14, 14, may easily be removed through the upper end of the casing for inspection, replacement and repair purposes.

While'I have shown and described certain embodiments of my invention, it is to be understood that it is capable of man modications. Changes, therefore, in t e construction and arrangement may be made Without departing from the spirit of the invention as disclosed in the appended claims, in which it' is] my intention to claim all novelty inherent Vin my invention as broadly as permissible, in view of the rior art.

WhatfI regard as new, and esire to secure by Letters Patent, is:

prevent ,Y .1.v A device of the character described in'- ficasin adapted for communication with `iewinterior of a cylinder of an internal combustion engine, said casing having a side opening to the atmosphere, a removable cap for said casing carryin an outlet valve, and a valve within said caslng for said side opening which may be removed from whensaid cap is removed.

said casing c 2. A f' -vlt'zjexjf the character described including 1acasirig adapted for communication with the interior of a cylinder of an internal cembiistanfaengne, 4sind Casing being PrO- vided with air inlet openings in the side wall, and in which there is provided a removable retainer in the casing holding flaps adjacent said inlet openings.

3. A device of the character described inlnding a casing adapted for communication with, the interior of a cylinder of an internal com bistion engine, said casing being prod with inlet openings in the side Wall and V1 provided with a cylindrical valve flap retainer ginside,

' hand, this 4th day said retainer being provided with annular channels for the reception of iiais. A

n witness whereof, I have hereunto set my of December, 1930.

CHARLES 2 J. COSTELLO. 

